Light Color Temperature Converter
Convert Kelvin color temperature to light appearance description.
Understand warm, neutral, and cool white light differences.
Enter a Kelvin value to see the light color description and suggested uses.
Color temperature measures the hue of a light source, expressed in Kelvin (K). Lower Kelvin values produce warm, yellowish light, while higher values produce cool, bluish-white light.
How color temperature works: The scale is based on the color of light emitted by a theoretical “black body” heated to different temperatures. At lower temperatures, the object glows red/orange (like a candle flame). At higher temperatures, it shifts through white to bluish-white (like bright daylight).
Color temperature reference chart:
| Kelvin Range | Description | Appearance | Common Use |
|---|---|---|---|
| 1,000-1,500K | Candlelight | Deep orange/amber | Candles, decorative Edison bulbs |
| 1,800-2,200K | Very warm white | Warm orange-yellow | Sunset simulation, restaurants |
| 2,700-3,000K | Warm white | Soft yellowish | Living rooms, bedrooms, hotels |
| 3,000-3,500K | Soft white | Neutral warm | Kitchens, bathrooms |
| 3,500-4,100K | Neutral white | Clean white | Office spaces, retail stores |
| 4,100-5,000K | Cool white | Bright white | Garages, workshops, hospitals |
| 5,000-5,500K | Full daylight | Crisp white | Photography, art studios |
| 5,500-6,500K | Daylight | Slightly blue-white | Task lighting, outdoor areas |
| 6,500-7,500K | Overcast daylight | Cool blue-white | Specialized task lighting |
| 8,000-10,000K | Blue sky | Distinctly blue | Aquariums, specialty lighting |
Choosing the right color temperature for your space:
- Bedrooms and living rooms: 2,700-3,000K creates a cozy, relaxing atmosphere similar to traditional incandescent bulbs.
- Kitchens and bathrooms: 3,000-4,000K gives enough clarity for tasks while remaining comfortable.
- Offices and workspaces: 4,000-5,000K promotes alertness and concentration without feeling harsh.
- Garages and workshops: 5,000-6,500K provides bright, detailed visibility for precision work.
Practical tips:
- The CRI (Color Rendering Index) is separate from color temperature. CRI measures how accurately colors appear under a light. Look for CRI 90+ for living spaces.
- Mixing color temperatures in the same room can look unnatural. Keep all bulbs within 300K of each other.
- “Warm” and “cool” in lighting terminology are the opposite of color wheel terminology: warm light is yellowish, cool light is bluish.
- Tunable white or “smart” bulbs let you adjust color temperature throughout the day, from warm in the evening to cool during work hours.
How we build and check this converter
This converter runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
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